WO2017210941A1

WO2017210941A1 - Method, apparatus and system for establishing user-plane bearer

Info

Publication number: WO2017210941A1
Application number: PCT/CN2016/087971
Authority: WO
Inventors: 应江威; 时晓岩; 邓强; 黄正磊
Original assignee: 华为技术有限公司
Priority date: 2016-06-08
Filing date: 2016-06-30
Publication date: 2017-12-14
Also published as: EP3461175A4; US20210068017A1; EP3787339B1; US20190110235A1; JP6768844B2; US11399328B2; US10869242B2; EP3461175B1; JP2019517756A; CN109314889A; KR102198409B1; KR20190015500A; EP3461175A1; BR112018075425A2; BR112018075425B1; EP3787339A1; CN109314889B

Abstract

Disclosed are a method and device for establishing a user plane bearer, so as to realise switching of data from a control plane scheme to a user plane scheme. The method of the present application receives instruction information sent from a mobility management network element by means of a service gateway, and allocates an identifier for a bearer according to the instruction information, thereby establishing a user plane bearer of an S1 interface. By means of the establishment of a user plane bearer, the transition of data from a control plane scheme to a user plane scheme is realised.

Description

Method, device and system for establishing user plane bearing

Technical field

The embodiments of the present invention relate to the field of communications, and in particular, to a method and apparatus for establishing a user plane bearer in the field of communications.

Background technique

The Third Generation Partnership Project ("3GPP") is conducting research on the Narrow Band Internet of Things (NB-IoT) project. Some applications of NB-IoT, such as water meters and electricity meters. The terminal such as the sensor is mainly used to send meter reading data or monitoring data with a small amount of data through the network, or the switching light control command issued by the intelligent street light receiving network, and the data carried in the data packet transmitted at one time is generally only tens of A few hundred bytes.

In the existing Long Term Evolution (LTE) system, when the idle terminal has data to transmit, even if the data to be transmitted is small data, the terminal needs to initiate before sending the data. The service request process is used to establish the bearer of the air interface and the S1 interface, and the radio resource control (Radio Resource Control, hereinafter referred to as "RRC") security context information needs to be downloaded to an evolved NodeB ("eNodeB" or "eNB"). However, the overhead of establishing bearers and subsequent operations is very wasteful before transmitting small data.

Therefore, in order to reduce the overhead, two schemes are currently designed to deliver the data for this application scenario: one scheme is CP CIoT EPS Optimization, that is, through terminal equipment (User Equipment, UE) and mobility. The NAS signaling between the management entities (MMEs) delivers these small data packets to the MME, and the MME transmits the data to the serving gateway (S-GW) through the S11-U bearer, and then to the packet data. The gateway (PDN gateway, P-GW); another scheme is UP CIoT EPS Optimization, that is, the UE transmits data to the base station (eNB) through the radio bearer, and the eNB transmits the data to the S1-U bearer. The S-GW, and then to the P-GW, is unique in that the eNB keeps the access layer AS context of the UE to reduce the air interface signaling interaction between the UE and the eNB.

However, due to the unstable data service of some NB-IoT applications, the data packets are sometimes low frequency. The small bag, sometimes turned into a high-frequency packet, or a big bag. At this time, using the above control plane scheme may bring some disadvantages, such as an increase in MME load, an increase in NAS signaling interaction between the UE and the MME, and the user plane scheme becomes more suitable. Then, you need to switch the data transmission from the control plane scheme to the user plane.

Summary of the invention

The method and device for establishing a user plane bearer provided by the embodiment of the present invention can implement the method of switching data from the control plane scheme to the user plane scheme.

In one aspect, the implementation of the present application provides a method of establishing a user plane bearer. The method includes a serving gateway (S-GW) receiving a first message from a mobility management entity (MME), the first message may be a modify bearer request message, or a modify access bearers request message, or a release access bearers request message.

The first message carries a first indication, where the first indication is used to indicate that the S-GW allocates a first identifier to a first evolved packet system (EPS) bearer of the UE. The first identifier is used to establish a first S1 interface user plane bearer of the UE, and the first S1 interface user plane bearer is a bearer between the S-GW and the eNB; the first identifier may be specifically S1 -U SGW F-TEID.

The S-GW allocates the first identifier to the first EPS bearer of the UE according to the first indication;

The S-GW sends a first response message to the MME, where the first response message carries the first identifier. The first response message may be a modify bearer response message, or a modify access bearers response message, or a release access bearers response message.

In a possible design, the first message includes a first EPS bearer identifier (EBI), and the first EBI is used by the S-GW to allocate the first identifier to an EPS bearer corresponding to the first EBI. .

In a possible design, the first message further includes a second identifier, where the second identifier is used to establish a first S11 interface user plane bearer of the UE, where the first S11 interface user plane bearer is the S- The bearer between the GW and the MME, for example, the second identifier may be an S11-U SGW F-TEID.

In a possible design, the first message may be a release access bearers request; the corresponding first response message may be a release access bearers response. The first message can also The create session request; its corresponding first response message can be create session response.

In one possible design, the S-GW stores the bearer context of the first EPS bearer of the UE.

In a possible design, the S-GW may determine that the value of the first parameter included in the first indication satisfies a preset condition, for example, the value of the Change F-TEID support Indication parameter may be detected to meet a preset condition (for example, 1). The value of the S11-U Tunnel Flag parameter satisfies a preset condition (for example, 0). When the preset condition is met, the S-GW allocates the first identifier to the EPS bearer corresponding to the first EBI.

In a possible design, the S-GW allocates its corresponding first identifier to each EPS bearer of the UE according to the first indication, and the S-GW stores the bearer context of each EPS bearer of the UE, S- The GW does not need the MME to inform the S-GW to allocate the first identifier according to the corresponding EPS bearer.

In a possible design, the MME may also inform the S-GW of which EPS bearers of the UE to allocate the first identifier by using a message. For example, the MME may send a message carrying the EBI to the S-GW. After receiving the message sent by the MME, the S-GW may determine which of the corresponding EPS bearers of the UE are assigned an identifier according to the EBI carried in the message.

In a possible design, the S-GW receives a second message from the MME, and the second message may also be a release access bearers request message, where the second message is used to instruct the S-GW to release the message. The S11 interface data plane bearer between the MME and the S-GW;

Determining, by the S-GW, an S11 interface data plane bearer between the MME and the S-GW according to the second message;

The S-GW sends a second response message to the MME.

In a possible design, the S-GW can release each S11 interface data plane bearer;

In a possible design, the MME may also inform the S-GW through the second message to release which S11 interface data plane bearers. For example, the MME may send a message carrying the EBI to the S-GW. After receiving the message sent by the MME, the S-GW may determine which S11 interface data plane bearers are to be released according to the EBI carried in the message.

In one possible design, the second message may be a release access bearers request message.

In a possible design, the S11 interface data between the MME and the S-GW is released. After the load, the MME may also decide to restore the S11 interface data plane bearer that has been released.

In a possible design, the first reply message further includes a second identifier, where the second identifier may be an S11-U SGW F-TEID, where the S11-U SGW F-TEID is used to establish an S11 interface user plane of the UE. The user plane of the S11 interface is carried as a bearer between the S-GW and the MME.

In another aspect, an embodiment of the present application provides a method of establishing a user plane bearer. The method includes the Mobility Management Entity (MME) transmitting a first message to a Serving Gateway (S-GW).

The first message can be the message described in the first aspect. The first message carries a first indication, where the first indication is used to indicate that the S-GW allocates a first identifier to a first evolved packet system (EPS) bearer of the UE, where the first identifier is used to establish the The first S1 interface user plane bearer of the UE, and the first S1 interface user plane bearer is a bearer between the S-GW and the eNB;

The MME receives a first response message from the S-GW, where the first response message carries the first identifier.

In one possible design, the first message includes a first EPS bearer identification (EBI).

In a possible design, when the MME determines that the S11 interface user plane bearer needs to be switched to the S1 interface user plane bearer, the value of the first parameter included in the first indication is set to meet the preset condition; the MME will The first parameter is sent to the S-GW. The first parameter may be determined by the MME, and the MME may notify the S-GW by configuring a Change F-TEID support Indication parameter and a preset value of the S11-U Tunnel Flag parameter. For example, when the value of the Change F-TEID support Indication parameter is set to 1 and the preset value of the S11-U Tunnel Flag parameter is 0, the S-GW allocates an identifier for the EPS bearer corresponding to the EBI.

In a possible design, the MME sends a second message to the S-GW, where the second message is used to instruct the S-GW to release the S11 interface data plane between the MME and the S-GW. Bearer; the MME receives a second response message from the S-GW. The second message may be a release access bearers request message.

In a possible design, after releasing the S11 interface data plane bearer between the MME and the S-GW, the MME may also decide to restore the released S11 interface data plane bearer.

In one possible design, the MME sends the first identity to the eNB.

In a third aspect, an embodiment of the present application provides a serving gateway (S-GW). The S-GW has a function of realizing the S-GW behavior in the above method. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more of the functions described above Corresponding modules.

In one possible design, the structure of the S-GW includes a processor and a transmitter/receiver configured to support the S-GW to perform the corresponding functions in the above methods. For example, according to the first indication, the first identifier is allocated for the first EPS bearer of the UE. The transmitter/receiver is configured to support communication between the S-GW and other network elements, and send information or instructions involved in the foregoing method to other network elements. For example, the first message is received from the MME, and the first response message is sent to the MME. The S-GW can also include a memory for coupling with the processor that holds the necessary program instructions and data for the base station.

In a fourth aspect, an embodiment of the present application provides a mobility management entity (MME). The MME has a function of realizing the MME behavior in the above method. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the structure of the MME includes a processor and a transmitter/receiver configured to support the MME in performing the corresponding functions in the above methods. For example, configuration instructions. The transmitter/receiver is configured to support communication between the MME and other network elements, and send information or instructions involved in the foregoing method to other network elements. For example, the indication information is sent to the S-GW, and the response message is received from the S-GW. The MME may also include a memory for coupling with the processor that stores the necessary program instructions and data for the base station.

In a fifth aspect, the embodiment of the present application further provides a system for establishing a user plane bearer, where the system includes the S-GW and the MME described in the foregoing aspect; or the system includes other network entities described in the foregoing aspects.

In another aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the S-GW, which includes a program designed to perform the above aspects.

In a further seven aspects, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the MME, which includes a program designed to perform the above aspects.

Compared with the prior art, the data transmission provided by the embodiment of the present invention is switched from the control plane scheme to User side plan.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention or the description of the prior art will be briefly described below. Obviously, the drawings described below are only the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art without departing from the drawings.

FIG. 1 is a schematic structural diagram of an application scenario according to an embodiment of the present disclosure;

2 is a schematic flowchart of establishing a user plane bearer according to an embodiment of the present invention;

3 is a schematic flowchart of establishing a user plane bearer according to an embodiment of the present invention;

4 is a schematic diagram of a process interaction for establishing a user plane bearer according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a process interaction for establishing a user plane bearer according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a process interaction for establishing a user plane bearer according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a process interaction for establishing a user plane bearer according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a service gateway according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a mobility management entity according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a process interaction for establishing a user plane bearer according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

Aspect of the present invention described herein may be applicable to an evolved packet system (Evolved Packet System, EPS) network architecture scenarios, it may be applied subsequent evolution of the system, such as the fourth generation (4 ^th Generation, 4G), the fifth generation (5 ^th Generation, 5G) and other systems. This embodiment uses an EPS network system as an example for description.

It should be noted that the EPS network architecture and the service scenario described in the embodiments of the present invention are used to more clearly illustrate the technical solutions of the embodiments of the present invention, and are not provided for the embodiments of the present invention. The technical solutions provided by the embodiments of the present invention are applicable to similar technical problems as the network architecture evolves and the new service scenarios appear.

In the present application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand the meaning. The user equipment UE involved in the present application may include various handheld devices with wireless communication functions, in-vehicle devices, wearable devices, computing devices or other processing devices connected to the wireless modem, and various forms of user equipment (User Equipment) , referred to as UE), mobile station (MS), terminal, terminal equipment, and so on. For convenience of description, in the present application, the devices mentioned above are collectively referred to as user equipments or UEs. A base station (BS) according to the present invention is a device deployed in a radio access network to provide a wireless communication function for a UE. The base station may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In a system using different radio access technologies, the name of a device having a base station function may be different. For example, in an LTE network, an evolved Node B (evolved Node B: eNB or eNodeB) is in the third. In the 3G network, it is called Node B and so on.

FIG. 1 is a schematic diagram of an EPS network architecture according to an embodiment of the present invention, which mainly includes a Serving Gateway (S-GW), a Mobility Management Entity (MME), a base station (eNB), and a terminal device. (UE). The relationship between the network elements is shown in Figure 1.

The evolved universal terrestrial radio access network (EUTRAN) is a network composed of multiple eNodeBs. The eNodeB is connected to the S-GW through the user plane interface S1-U, and passes through the control plane interface S1-MME. The MME is connected. The MME is responsible for all control plane functions of user session management, including Non-Access Stratum (NAS) signaling and security, tracking area management, packet data network gateway (PDN Gateway, P-GW; PDN, Packet Data). Network) and S-GW selection. S-GW It is mainly responsible for data transmission, forwarding, and route switching of the UE, and is used as a local mobility anchor point when the UE switches between eNodeBs. The P-GW is responsible for the Internet Protocol (IP) address allocation of the UE, data packet filtering, rate control, and generation of charging information of the terminal. In the NB-IoT scenario, the MME also establishes an S11-U user plane bearer on the S11 interface with the SGW.

FIG. 2 is a schematic flowchart diagram of a system for establishing a user plane bearer according to an embodiment of the present invention.

The system takes the EPS network architecture as an example, and includes major network elements such as S-GW, MME, and eNB. The main interaction process of the technical solution provided by the embodiment of the present invention is to implement the switchover of the user plane bearer between the S-GW and the MME, and the other network element is used to implement the embodiment of the present invention. It is also possible to do the corresponding cooperation steps.

S201: The MME sends a first message to the S-GW, where the first message carries the first indication.

S202: The S-GW allocates the first identifier to the first EPS bearer of the UE according to the first indication.

S203: The S-GW sends a first response message to the MME, where the first response message carries the first identifier.

4-7 are specific implementation manners provided by an embodiment of the present invention, which are discussed in detail below with reference to the accompanying drawings.

Embodiment 1

As shown in FIG. 4, the MME sends a first message to the S-GW, and the first message may be a modify bearer request message or a modify access bearers request message.

The first message carries a first indication, which may indicate that the S-GW allocates a first identifier to the first evolved packet system (EPS) bearer of the UE, and the first indication may be named as S1-U SGW F-TEIDs allocation Indication, or CP transfer to UP indication, or other name, not limited here.

The first identifier may be an S1-U SGW F-TEID; the identifier is used to establish a first S1 interface user plane bearer of the UE, and the first S1 interface user plane bearer is the S-GW and the eNB. Carrying between.

Optionally, the first message further includes a first EPS bearer identifier (EBI), where the first EBI is used. And assigning, by the S-GW, the first identifier to an EPS bearer corresponding to the first EBI.

Optionally, as shown in FIG. 10, the process may be an establishment process of an S11-U user plane tunnel based on a CIoT control plane data transmission scheme of an S11-U user plane tunnel. The first indication may indicate that the S-GW allocates a second identifier to the first evolved packet system (EPS) bearer of the UE, where the second identifier is used to establish a first S11 interface user plane bearer of the UE, where the first S11 The interface user plane is carried as a bearer between the S-GW and the MME, for example, the second identifier may be an S11-U SGW F-TEID. The SGW allocates the first identifier according to the first indication, in addition to assigning the second identifier. The first identifier is used to establish a first S1 interface user plane bearer of the UE, and the first S1 interface user plane bearer is a bearer between the S-GW and an eNB. The SGW returns the first identifier and the second identifier to the MME by using a first response message.

The S-GW allocates the first identifier to the first EPS bearer of the UE according to the first indication; as shown in step 5 in FIG. 4 .

Optionally, the S-GW allocates its corresponding first identifier to each EPS bearer of the UE according to the first indication, where the S-GW stores the bearer context of each EPS bearer of the UE, and the S-GW does not need to pass the MME. The message informs the S-GW to assign the first identity according to the corresponding EPS bearer area.

Optionally, the MME may also notify the S-GW of which EPS bearers of the UE to allocate the first identifier by using a message. For example, the MME may send a message carrying the EBI to the S-GW. After receiving the message sent by the MME, the S-GW may determine which of the corresponding EPS bearers of the UE are assigned an identifier according to the EBI carried in the message.

Optionally, the MME may notify the S-GW by configuring a Change F-TEID support Indication parameter and a preset value of the S11-U Tunnel Flag parameter. For example, when the value of the Change F-TEID support Indication parameter is set to 1 and the preset value of the S11-U Tunnel Flag parameter is 0, the S-GW allocates an identifier for the EPS bearer corresponding to the EBI. The details are shown in steps 7-9 in Figure 7.

Optionally, the first parameter includes an S11-U Tunnel Flag; the MME configures a value of the S11-U Tunnel Flag parameter to be 1;

The first parameter is a newly defined indication information, where the new definition indication information is used to indicate that the bearer corresponding to the EBI of the UE needs to be switched from the S11-U bearer to the S1-U bearer; the MME sets the value of the first parameter. Configured to 1.

It can be understood that the value of the above parameters can be artificially set. For example, an indication information may be newly defined, and the bearer corresponding to the EBI of the UE needs to be converted from the S11-U bearer to The S1-U bearer; the MME sets the value of the first parameter to 1 to meet the preset condition, that is, it is determined that the user plane bearer of the S11 interface needs to be switched to the user plane bearer of the S1 interface.

Optionally, the S-GW may also detect whether the identifier corresponding to the EBI is allocated, and if it has been allocated, the configuration may not be repeated.

The S-GW sends a first response message to the MME, where the first response message carries the first identifier;

As shown in FIG. 4, the first response message may be a modify bearer responset message or a modify access bearers response message.

Embodiment 2

As shown in FIG. 5, the specific implementation manner may refer to the first embodiment. In the specific implementation manner, the information exchanged between the MME and the S-GW in the second embodiment is different. Specifically, in this embodiment, the first message sent by the MME to the S-GW is a release access bearers request, and the first corresponding message sent by the S-GW to the MME is a release access bearers response, and the specific implementation manner may refer to the previous implementation. The description in the example will not be repeated here. Embodiment 3

S201-S203 is a user plane bearer process for establishing an S1 interface of the UE, where the user plane of the first S1 interface is a bearer between the S-GW and the eNB.

Before the user plane bearer of the S1 interface of the UE is established, the S11 interface data plane bearer between the MME and the S-GW may be released. For the specific release process, reference may be made to the description of S204 to S206 in FIG.

S204: The MME sends a second message to the S-GW.

As shown in FIG. 6, the second message may also be a release access bearers request message, where the second message is used to instruct the S-GW to release an S11 interface data plane bearer between the MME and the S-GW.

S205: The S-GW releases the S11 interface data plane bearer between the MME and the S-GW according to the second message.

Optionally, the S-GW can release each S11 interface data plane bearer;

Optionally, the MME may also notify the S-GW to release which S11 interface data plane bearers by using the second message. For example, the MME may send a message carrying the EBI to the S-GW, and the S-GW receives the message. After the message sent by the MME, according to the EBI carried in the message, it can be determined which S11 interface data plane bearers are to be released.

S206: The S-GW sends a second response message to the MME.

The second message may be a release access bearers response message.

Optionally, after releasing the data plane bearer of the S11 interface between the MME and the S-GW, the MME may also decide to restore the released S11 interface data plane bearer. For the implementation process, refer to the establishment process of the user plane bearer on the S1 interface. The details are not mentioned here.

For the control plane scheme, the S11-U bearer between the MME and the S-GW is established; for the user plane scheme, the S1-U bearer between the eNB and the S-GW is established. Since the UE starts to use the control plane scheme, only the S11-U SGW F-TEID allocated by the S-GW for the S11-U bearer exists on the MME, and the S1-U SGW F-TEID is not allocated for the S1-U bearer. Therefore, the MME cannot send a valid S1-U SGW F-TEID to the eNB to establish an S1-U bearer, that is, the control plane scheme cannot be successfully converted to the user plane scheme.

In the solution provided by the embodiment, the S1-U SGW F-TEID carried by the S1-U is obtained by the MME interacting with the SGW, and the data is transferred from the control plane solution to the user plane solution.

FIG. 8 shows a possible structural diagram of the S-GW involved in the above embodiment.

As shown in FIG. 8, the device 800 is an S-GW including a receiver 801, a controller/processor 802, and a transmitter 803. It can be understood that the receiver and the transmitter can be implemented in the same unit. The transmitter 801/receiver 803 is configured to support the S-GW to send and receive information between the S-GW and the MME in the foregoing embodiment, and to support communication between the S-GW and other network elements. The controller/processor 802 performs various functions for communicating with the MME.

For example, the receiver in the S-GW structure receives the first message from the MME, the first message carries a first indication, and the first indication is used to indicate that the S-GW is the first evolved packet system of the UE (EPS) The bearer allocates a first identifier, where the first identifier is used to establish a first S1 interface user plane bearer of the UE, and the first S1 interface user plane bearer is a bearer between the S-GW and the eNB;

a processor, the first indication, the first identifier is allocated to the first EPS bearer of the UE;

The sender sends a first response message to the MME, where the first response message carries the first identifier.

The controller/processor 802 also performs the processes involved in the S-GW of Figures 4-7 and/or other processes for the techniques described herein. Apparatus 800 can also include a memory for storing program codes and data for the base station.

It will be appreciated that Figure 8 only shows a simplified design of the S-GW. In practical applications, the base station may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all base stations that can implement the present invention are within the scope of the present invention.

Fig. 9 shows a simplified schematic diagram of one possible design structure of the MME involved in the above embodiment. The MME includes a receiver 901, a controller/processor 902, and a transmitter 903.

The transmitter 903 outputs an indication signal, where the indication signal is used by the S-GW to configure a first identifier for the S1-U bearer, where the first identifier is used to establish a first S1 interface user plane bearer of the UE, where the first S1 The interface user plane is carried as a bearer between the S-GW and the eNB, and specifically, the steps implemented by the MME in the foregoing embodiment may be implemented.

The receiver 901 receives the response information transmitted from the S-GW. Specifically, the steps implemented by the MME in the foregoing embodiments may be implemented.

The controller/processor 902 performs control management on the actions of the MME for performing the processing performed by the MME in the above embodiment. For example, parameters for configuring the indication information cause the S-GW to act according to the indication information, and/or other processes of the techniques described herein. As an example, the controller/processor 902 is configured to support the MME in performing the processes of the MMEs of FIGS. 4-7 and/or other processes for the techniques described herein. The apparatus 900 can also include a memory for storing program codes and data of the base station

The controller/processor for performing the above-mentioned S-GW, MME and other network elements of the present invention may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), and the field may be Programming gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, Hardware components or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.

Those skilled in the art will appreciate that the various method steps and elements described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, the steps and composition of the various embodiments have been generally described in terms of function in the foregoing description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. Different methods may be used to implement the described functionality for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit is implemented in the form of a software functional unit and sold as a separate product When sold or used, it can be stored on a computer readable storage medium. Based on such understanding, the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a USB flash drive, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a disk or a CD. A variety of media that can store program code.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any equivalent person can be easily conceived within the technical scope of the present invention by any person skilled in the art. Modifications or substitutions are intended to be included within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

A service gateway (S-GW) that includes:

a receiver, configured to receive a first message from a mobility management entity (MME), where the first message carries a first indication, where the first indication is used to indicate that the S-GW is a first evolved packet system of a UE ( The bearer allocates a first identifier, where the first identifier is used to establish a first S1 interface user plane bearer of the UE, and the first S1 interface user plane bearer is a bearer between the S-GW and the eNB;

a processor, configured to allocate, according to the first indication, the first identifier to a first EPS bearer of the UE;

And a sender, configured to send a first response message to the MME, where the first response message carries the first identifier.
The service gateway of claim 1 wherein:

The first message includes a first EPS bearer identifier (EBI), and the first EBI is used by the S-GW to allocate the first identifier to an EPS bearer corresponding to the first EBI.
A service gateway according to claim 1 or 2, characterized in that

The first message is a modify bearer request;

The first response message is a modify bearer response.
A service gateway according to claim 1 or 2, characterized in that

The first message is a modify access bearers request;

The first response message is a modify access bearers response.
A service gateway according to claim 1 or 2, characterized in that

The first message is a release access bearers request;

The first response message is a release access bearers response.
A service gateway according to claim 1 or 2, characterized in that

The first message is create session request;

The first response message is a create session response.
The service gateway according to any one of claims 1 to 6, further comprising:

And a memory, configured to store a bearer context of the first EPS bearer of the UE.
A service gateway according to any one of claims 1 to 7, wherein

The processor is configured to allocate the first identifier to an EPS bearer corresponding to the first EBI when the S-GW determines that the value of the first parameter included in the first indication meets a preset condition.
The service gateway according to claim 8, wherein the value of the first parameter meets a preset condition, and the first identifier is allocated to the EPS bearer corresponding to the first EBI, including:

The first parameter includes a Change F-TEID support Indication and an S11-U Tunnel Flag; when the value of the Change F-TEID support Indication parameter is configured to 1 and the preset value of the S11-U Tunnel Flag parameter is 0, The S-GW allocates a first identifier to the EPS bearer corresponding to the first EBI; or, the first parameter includes an S11-U Tunnel Flag; and when the value of the S11-U Tunnel Flag parameter is configured to 1, The S-GW allocates a first identifier to the EPS bearer corresponding to the first EBI; or

The first parameter is newly defined indication information, where the new definition indication information is used to indicate that the bearer corresponding to the EBI of the UE needs to be converted from the S11-U bearer to the S1-U bearer; when the value of the new definition indication information is configured When the value is 1, the S-GW allocates a first identifier to the EPS bearer corresponding to the first EBI.
A service gateway according to any one of claims 1 to 9, characterized in that

The receiver is further configured to: before the S-GW receives the first message from the MME, receive a second message from the MME, where the second message is used to indicate the S-GW release Carrying an S11 interface data plane bearer between the MME and the S-GW;

The processor is configured to release an S11 interface data plane bearer between the MME and the S-GW according to the second message;

The transmitter is configured to send a second response message to the MME.
A service gateway according to claims 1 to 10, characterized in that:

The first response message further includes a second identifier, where the second identifier is used to establish a first S11 interface user plane bearer of the UE, and the first S11 interface user plane bearer is the S-GW and the MME. Carrying between.
A mobility management entity (MME) comprising:

a transmitter, configured to send a first message to a serving gateway (S-GW), where the first message carries a first indication, where the first indication is used to indicate that the S-GW is a first evolved packet system of the UE ( The bearer allocates a first identifier, where the first identifier is used to establish a first S1 interface user plane bearer of the UE, and the first S1 interface user plane bearer is a bearer between the S-GW and the eNB;

a receiver, configured to receive a first response message from the S-GW, where the first response message carries the first identifier.
The MME according to claim 12, characterized in that

The first message includes a first EPS bearer identifier (EBI).
The MME according to claim 12 or 13, wherein

The processor is configured to determine that a value of the first parameter included in the first indication is to meet a preset condition when the user plane bearer of the S11 interface is to be switched to the user plane bearer of the S1 interface;

The transmitter is configured to send the first parameter to the S-GW.
The MME according to claim 14, wherein the processor is configured to set a value of the first parameter to meet a preset condition, including:

The first parameter includes a Change F-TEID support Indication and an S11-U Tunnel Flag; the processor is configured to set a value of the Change F-TEID support Indication parameter to 1, and the S11-U Tunnel Flag The value of the parameter is set to 0; or,

The first parameter includes an S11-U Tunnel Flag; the processor is configured to configure a value of the S11-U Tunnel Flag parameter to be 1; or

The first parameter is a new definition indication information, where the new definition indication information is used to indicate that the bearer corresponding to the EBI of the UE needs to be converted from the S11-U bearer to the S1-U bearer; and the processor is configured to use the new definition indication The value of the message is configured to 1.
The MME according to any one of claims 12 to 15, wherein

The transmitter is configured to send a second message to the S-GW before the MME sends the first message to the S-GW, where the second message is used to indicate that the S-GW is released. The S11 interface data plane between the MME and the S-GW is carried;

The receiver is configured to receive a second response message from the S-GW.
The MME according to any one of claims 12 to 16, wherein

The transmitter is configured to send the first identifier to an eNB.
A system for establishing a user plane bearer, comprising the S-GW according to any one of claims 1 to 11 and the MME according to any one of claims 12 to 17.
A method for establishing a user plane bearer, the method comprising:

The serving gateway (S-GW) receives the first message from the mobility management entity (MME), the first message carries a first indication, and the first indication is used to indicate that the S-GW is the first evolved group of the UE The system (EPS) bearer allocates a first identifier, where the first identifier is used to establish a first S1 interface user plane bearer of the UE, and the first S1 interface user plane bearer is the S-GW and the eNB Bearer between

The S-GW allocates the first identifier to the first EPS bearer of the UE according to the first indication;

The S-GW sends a first response message to the MME, where the first response message carries the first identifier.
The method of claim 19 wherein:

The first message includes a first EPS bearer identifier (EBI), and the first EBI is used by the S-GW to allocate the first identifier to an EPS bearer corresponding to the first EBI.
Method according to claim 19 or 20, characterized in that

The first message is a modify bearer request;

The first response message is a modify bearer response.
Method according to claim 19 or 20, characterized in that

The first message is a modify access bearers request;

The first response message is a modify access bearers response.
Method according to claim 19 or 20, characterized in that

The first message is a release access bearers request;

The first response message is a release access bearers response.
Method according to claim 19 or 20, characterized in that

The first message is create session request;

The first response message is a create session response.
A method according to any one of claims 19 to 24, wherein

The S-GW stores a bearer context of the first EPS bearer of the UE.
A method according to any one of claims 19 to 25, wherein

The S-GW allocates the first identifier to the first EPS bearer of the UE according to the first indication, including:

And when the S-GW determines that the value of the first parameter included in the first indication meets a preset condition, the S-GW allocates the first identifier to an EPS bearer corresponding to the first EBI.
The method according to claim 26, wherein when the S-GW determines that the value of the first parameter included in the first indication satisfies a preset condition, the method includes:

The first parameter includes a Change F-TEID support Indication and an S11-U Tunnel Flag; when the value of the Change F-TEID support Indication parameter is configured to be 1 and S11-U When the preset value of the Tunnel Flag parameter is 0, the S-GW allocates the first identifier to the EPS bearer corresponding to the first EBI; or

The first parameter includes an S11-U Tunnel Flag; when the value of the S11-U Tunnel Flag parameter is configured to be 1, the S-GW allocates a first identifier to an EPS bearer corresponding to the first EBI; or

The first parameter is newly defined indication information, where the new definition indication information is used to indicate that the bearer corresponding to the EBI of the UE needs to be switched from the S11-U bearer to the S1-U bearer; when the value of the first parameter is configured as At 1 o'clock, the S-GW allocates a first identifier to the EPS bearer corresponding to the first EBI.
The method according to any one of claims 19 to 27, further comprising: before the S-GW receives the first message from the MME, further comprising:

The S-GW receives a second message from the MME, where the second message is used to instruct the S-GW to release an S11 interface data plane bearer between the MME and the S-GW;

Determining, by the S-GW, an S11 interface data plane bearer between the MME and the S-GW according to the second message;

The S-GW sends a second response message to the MME.
The method according to claims 19 to 28, characterized in that:

The first response message further includes a second identifier, where the second identifier is used to establish a first S11 interface user plane bearer of the UE, and the first S11 interface user plane bearer is the S-GW and the MME. Carrying between.
A method for establishing a user plane bearer, the method comprising:

The mobility management entity (MME) sends a first message to the serving gateway (S-GW), where the first message carries a first indication, the first indication is used to indicate that the S-GW is the first evolved group of the UE The system (EPS) bearer allocates a first identifier, where the first identifier is used to establish a first S1 interface user plane bearer of the UE, and the first S1 interface user plane bearer is between the S-GW and the eNB. Carry

The MME receives a first response message from the S-GW, where the first response message carries the first identifier.
The method of claim 30 wherein:

The first message includes a first EPS bearer identifier (EBI).
A method according to claim 30 or 31, wherein

When the MME determines that the user plane bearer of the S11 interface needs to be switched to the user plane bearer of the S1 interface, the value of the first parameter included in the first indication is set to meet the preset condition;

The MME sends the first parameter to the S-GW.
The method of claim 32, the MME setting a value of the first parameter included in the first indication to meet a preset condition, comprising:

The first parameter includes a Change F-TEID support Indication and an S11-U Tunnel Flag; the MME sets the value of the Change F-TEID support Indication parameter to 1, and sets the value of the S11-U Tunnel Flag parameter. Set to 0; or,

The first parameter includes an S11-U Tunnel Flag; the MME configures the value of the S11-U Tunnel Flag parameter to 1; or

The first parameter is a newly defined indication information, where the new definition indication information is used to indicate that the bearer corresponding to the EBI of the UE needs to be switched from the S11-U bearer to the S1-U bearer; the MME sets the value of the first parameter. Configured to 1.
The method according to any one of claims 30 to 33, further comprising: before the sending, by the MME, the first message to the S-GW,

The MME sends a second message to the S-GW, where the second message is used to instruct the S-GW to release an S11 interface data plane bearer between the MME and the S-GW;

The MME receives a second response message from the S-GW.
A method according to any one of claims 30 to 34, wherein

The MME sends the first identifier to an eNB.